I have been doing PE for just over a month and I have gained 1/4" in length.
I heated my penis up for 5-10 minutes with a (microwaved) rice bag.
Dry jelqued for 10-15 minutes at 50-70% erection
Heated my shaft again for 3 minutes then stretched, Up, down, left, right and straight out
holding for 3+ minutes in each direction with a moderate force (no pain) . I heated up again before I changed the stretching direction.
For 3 hours afterwards I wore an extender (
www.autoextender.com) and constantly kept it warm.
Heat has definitely improved my gaining rate, it is over twice as fast than without.